diff --git a/newsfragments/3490.fixed.md b/newsfragments/3490.fixed.md
new file mode 100644
index 00000000000..b7cf1db847d
--- /dev/null
+++ b/newsfragments/3490.fixed.md
@@ -0,0 +1 @@
+Disable `PyMarshal_WriteObjectToString` from `PyMarshal_ReadObjectFromString` with the `abi3` feature.
diff --git a/pyo3-ffi/src/lib.rs b/pyo3-ffi/src/lib.rs
index cae3001d4d2..cddf53e0333 100644
--- a/pyo3-ffi/src/lib.rs
+++ b/pyo3-ffi/src/lib.rs
@@ -281,6 +281,7 @@ pub use self::intrcheck::*;
 pub use self::iterobject::*;
 pub use self::listobject::*;
 pub use self::longobject::*;
+#[cfg(not(Py_LIMITED_API))]
 pub use self::marshal::*;
 pub use self::memoryobject::*;
 pub use self::methodobject::*;
@@ -351,7 +352,8 @@ mod iterobject;
 mod listobject;
 // skipped longintrepr.h
 mod longobject;
-pub(crate) mod marshal;
+#[cfg(not(Py_LIMITED_API))]
+pub mod marshal;
 mod memoryobject;
 mod methodobject;
 mod modsupport;